Revert "Remove win_vulkan_sdk."

This reverts commit 876dc81f2a7711d8c33773fd92488182cfd47614.

Reason for revert: Breaking everything

Original change's description:
> Remove win_vulkan_sdk.
> 
> We only needed this for the Vulkan headers, which we now have in
> src/third_party.
> 
> Change-Id: I453ed73c73b3304520b628527102607d848bcd37
> Reviewed-on: https://skia-review.googlesource.com/c/180775
> Commit-Queue: Greg Daniel <egdaniel@google.com>
> Auto-Submit: Ben Wagner <benjaminwagner@google.com>
> Reviewed-by: Greg Daniel <egdaniel@google.com>

TBR=egdaniel@google.com,benjaminwagner@google.com

Change-Id: I0ae35fddfc112631a47db9775d790f999abf26f8
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/180779
Reviewed-by: Ben Wagner <benjaminwagner@google.com>
Commit-Queue: Ben Wagner <benjaminwagner@google.com>
11 files changed